Ferodo DS2500- high performance road/Track pad,works from cold to 600-650 degrees, kind on rotors, friction curve quite stable but will rise slightly with temp.
Ferodo DS3000- track pad, Works from cold, high inital bite, about 20% more friction than a DS2500. can be hard on discs when cold (street use), can be noisy as it is a race pad.
Pagid RS4-2(blues)- very similar to DS2500 (temp and friction specs), very popular tarmac rally pad, bit noiser than DS2500.